DS

Retro Game ChallengeUnlock ''Sound'' mode on the title screen02/23/09

Game Boy

Mega Man VVarious codes08/13/04

Game Boy Advance

Final Fantasy IV Advance1991 Dev Team Office12/16/05
LEGO Star Wars: The Video GameUnlock Characters to buy in Freeplay03/30/05
Shining Force: Resurrection of the Dark DragonVillain Cards06/25/04
Yu-Gi-Oh! Worldwide Edition: Stairway to the Destined DuelMisc. Passwords06/23/04

GameGear

Mega ManVarious password combinations08/16/04

iOS (iPhone/iPad)

Final Fantasy Tactics: The War of the LionsSound Test01/28/14
Final Fantasy Tactics: The War of the Lions for iPadSound Test01/28/14
Final Fantasy VGame Center Achievements04/01/13
GHOST TRICK: Phantom DetectiveGhost Puzzle Minigame01/04/13

NES

Mega Man 3Passwords02/10/02
Mega Man 4Passwords02/25/02
Mega Man 6Passwords11/10/02

Online/Browser

NeopetsHidden Links09/29/03

PlayStation 3

Bejeweled 2Change Graphics02/03/09
Bejeweled 2Play Different Game Modes02/03/09

Super Nintendo

Mega Man XMisc. Passwords01/26/04